Reamer.



S. F. ESTELL.

REAMER.

APPLICAUON man MAY2.1913.

191 34,32% Patented Apr. 6, 1915.

2 SHEETS-*SHEET 1.

THE NoER/s PETERS CO v PHOTG'LITHQ, WASHINGTON. D C.

S. F. ESTELL.

BEAMER.

APPLlcAnoN mm MAY 2. 191s.

3l @l 34322 Patented Apr. 6, 1915.

2 SHEETS-SHEET 2.

SAMUEL F. ESTELL, OF LOS ANGELES, CALIFORNIA.

BEAMER.

Application filed May 2, 1913.

T0 all fio/0m t may concern:

Be it known that I, SAMUEL F. Es'rnLL, a citizen of the United States, and resident of Los Angeles, county of Los Angeles, and

tate of California, have invented certain new and useful Improvements in Beamers, of which the following is a speciiication, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to reamers and more especially to a tool constructed for reaming out the end of a pipe as for the purpose of removing the instanding bur commonly left upon a pipe end by the operation of cutting the pipe to length. It is well known that any instanding projection left upon the wall of a pipe intended for use in conveying iuids serves to further the accumulation of sediment within the pipe. rlhis is true and particularly objectionable in the case of the instanding burs left upon the ends of pipe sections when the latter are connected together for use in plumbing, as for conveying drainage and the like.

The invention accordingly has for its principal object to provide a simple and eifective reaming device which may be expeditiously employed for smoothing the end portions of vpipe sections upon the inside.

Further objects of the invention will appear from the following description.

In the accompanying drawings Figure 1 is a central longitudinal sectional view showing a reaming device embodying the features of improvement provided by the invention, a detail of pipe being shown partly in elevation and partly in section. Fig. 2 is an end elevation of the device shown in Fig. 1. Figs. 3 and 4 are sectional views taken on the lines 3-3 and 4-4, respectively, of Fig. 1. Fig. 5 is a detail perspective view show* ing parts of a clamp which may desirably be used in connection with the device. Fig. 6 is a perspective view showing a detail of the tool socket. Fig. 7 is an end view of the tool and Fig. 8 is a detail perspective view.

The reamer provided by the invention may be conveniently constructed to be removably clamped upon the frame of a thread cutting die. Such a die is shown in the drawings. t comprises a pair of relatively movable parts 11 and 12 having threaded connection, as at 13. Set screws 14, serve for' clamping one of the parts, as

11 upon the pipeX. The other part, as l2,

Specification of Letters Patent.

Patented Apr. 6, 1915.

serial No. 765,012.

constitutes the frame of t-he die. It is provided with laterally facing handle receiving sockets 15, 16, and carries the thread cutting tool, as 17. A plurality of pins 18, which have a pair of oppositely facing stop shoulders 19, 20, slide through the part, 12, and serve for guidedly connecting the parts 11 and 12 and for limiting the travel of the thread cutting tools, as 17, in each direction. As shown, the pins, 18, are fixed at one end in a collar, 21, which is rotatably mounted upon the part 11, between shoulders, as 22, 23. Handles as 24, 25, removably entered in the sockets 15, 16 serve for rotating the part 12 to operatively engage the cutting tools, as 17, with the pipe.

In carrying out the invention a supporting plate, 26, is preferably provided. As shown, this plate is provided with apertures, as 27, for slidingly receiving the guide pins, 18, and with a plurality of clamping dogs, 28, adapted for hooked engagement with the parts 12, of the thread cutting die. A recess 29, is conveniently formed in each of the margins of the plate 26 for receiving one of the clamping dogs 28. Fach of these dogs is hingedly connected to the plate through a pivot pin 30, which passes through the dog, intermediate its ends and through apertured lugs 31, one of which is formed upon the plate 26 at each side of the recess 29. Springs, 32 (Fig. 5) one of which is coiled about each of the pivot pins 30 and reacts between the corresponding dog 28, and the wall of the corresponding recess 29, serve for normally holding the clamping dogsk in open or extended position. The plate 26, is shown as being provided with an outwardly extending central tubular shank, 33. A sleeve 34, is rotatably mounted upon the said shank 33 and preferably projects beyond the same. The outer end of the sleeve, 34, is most desirably closed, as indicated at 35, and a bar 36, is set transversely through the sleeve adjacent its outer end to provide handles for rotating the same. A set screw, 37, set into the tubular shank, 33, through a slotted opening 38, in the sleeve 34, serves for limiting the turning movement of the latter on the shank.

A cam plate 39, fixed upon the sleeve, 34, serves for controlling the holding dogs 28. As shown, this plate has a plurality of wings, 40, one for engaging each of the dogs,

.23.Y Upon rotation of the sleeve 34 in one direction, each wing 40, serves to rock the corresponding dog 28 upon its pivot 30, against the effort of the spring 32, for closing the dogs upon the part- 12 of the thread cutting die. Rotation of the sleeve, 34, in the opposite direction serves to release the wings, 40, from the holding dogs 28, whereby these are opened by the springs 32. Preferably a latch is provided for normally preventing rotation of the sleeve, 34, in the last mentioned direction when the holding dogs are in closed position. As shown, this latch comprises a locking finger' 41, having one end pivotally secured against a side of the cam plate 39, in such manner that its other end may swing beyond the margin of the cam plate for engagement with one of the holding dogs 2S. A spring 42, reacting between the cam plate 39 and the locking finger, 41, serves for normally holding the locking nger in extended position. A thumb piece 43, mounted on the locking finger 41 and projecting through a slotted opening 49in the cam plate 39, serves for swinging the Vlocking finger inwardly against the eort of the spring 42 when it is desired to Irotate the sleeve 34 to release the holding dogs from engagement with the part 12 of the thread cutting die.

A reaming tool is indicated at 45. It is preferably provided with a flattened head 46 and'with a recess 47 adjacent its head, the latter being bounded by an inwardly facing shoulder, 48. A tubular plunger, 49, is slidingly mounted within thevtubular shank 33 of the plate 26. This plunger has its walls slotted adjacent one end, as indicated at 50 (Fig. 6) to provide a socket for receiving the flattened head 46, of the reaming tool 45. To prevent the spreading of the parts of the plunger 49, the slots 50, are preferably made deep enough to permit the ends of the plunger to enter the recess 47, in the reaming tool. A pin 51, set transversely through the plunger 49, and having its ends moving in slotted ways, as 52, provided in theV shank 33 of the plate 26, serves both for causing the plunger' 49 and tool 45 to rotate with the plate 26 and for limiting the sliding movement of the plunger. A coiled spring 70, housed within the sleeve, 34, and reacting between the end of the plunger 49 and the closed end 35 of the sleeve, servesl for holding the reaming tool to its work.` Preferably the spring 70, is made sufficiently stiff to hold the tool 45 to its work without being completely compressed.v If desired, a plate 53 may be interposed'between the closed end 35 ofthe sleeve 34 and the adjacent end of the spring 70. A set screw 54 having threaded engagement with the closed end ofthe sleeve34 and bearing upon the plate 53, may then b'e used for adjusting the tension' of thespri-ng 70. l Y

The Vinvention provides 4a device which enter the said sleeve 34, to control the operation of the holding dogs, 28. rlhe projecting ends of Vthe bar l36 provide handles which are conveniently employed both in handling the device and in rotating the sleeve 34. y The reaming tool 45, may be used simultaneously with the thread cutting tools 17 or the parts provided by the invention may be applied to the thread cutting die after the thread has been cut. ln either case the threaded connection 13, between the two parts 11, 12 of the thread cutting die serves-for causing the reaniing'tool to be advanced upon its work when the handles 24, 25 are used for rotating the part 12 of the thread cuttingdie. A set screw, 55, having threaded engagement with the wall of the plunger 49, at one side Y of the slot, 50, and bearing against'the flattened head 46 of the tool, 45, will'beconveniently employed for cletachablyconnecting the reaming tool and plunger.

' I claim as my invention- 1. In combination, a cutting tool having an axially disposed flattened head, the end of the tool adjacent the base ofsaid head being recessed to provide an inwardly facing shoulder at each side of the head, and a handle for the tool having its end slotted to receive the flattened head ofthe tool and recess adjacent the base of the head.' l

2. In combination', a cutting tool having an axially disposed flattened head, the end of the tool adjacent the base of said head being recessed to provide an inwardly facing annular shoulder at each side of the head, and a tubularv handle for the tool having its wall bifurcated atone end to straddle the flattened head of the tool` and enterqthe socket in the end of the toolv for engagement lio with the said inwardly facing annular shoul- Y Y der at each Vside of the head. Y

3. A reamer for smoothing the interior of pipe ends comprising, in'combination, a

platecOnStruCted to be fitted against the end of a pipe threading die, a reaming tool car- Y Y 4. A reamer for smoothing the interior ofY pipe ends comprising, in combination, a plate constructed to be fitted against the end of a pipe threading die, a reaming tool carried by the plate, a plurality ofV holding dogs carried by the plate,l the ends' of the iso,

dogs being constructed for hooked engagement with the said die and one of the dogs being pivotally mounted on the plate, a cam rotatably mounted on the plate for swinging the pivoted holding dog in one direction, aspring acting on the pivoted holding dog to swing it in the other direction and a latch for holding the cam against movement in one position.

5. In combination, a clamp constructed to be secured upon a pipe adjacent one end, a rotatable frame having threaded engagement ivith the clamp, a plate, a plurality of holding dogs pivotally mounted on the plate and adapted for hooked engagement with the said rotatable frame, and a cutting tool carried by the plate and engageable With the interior of the pipe.

6. In combination, a clamp constructed to be secured upon a pipe adjacent one end, a rotatable frame carried by the clamp, means for positively advancing the frame along the clamp upon rotation of the former, and a cutting tool yieldingly mounted on the frame.

7. In combination, a clamp constructed to be secured upon a pipe adjacent one end, a rotatable frame carried by the clamp, means for positively advancing the frame along the clamp upon rotation of the former, and a pair of cutting tools, one yieldingly mounted on the frame and the other fixed in the frame, one of said cutting tools being engageable with the interior of the pipe and the other being engageable With the exterior of the pipe.

8. A reamer for smoothing the interior of pipe ends comprising, in combination, a plate constructed to be iitted against the end oi' a pipe threading die, holding dogs pivotally connected to the plate intermediate their ends and extending in front and in rear of the same, the front ends of the dogs being constructed for hooked engagement With the said die, a tubular shank centrally mounted upon the plate and extending in rear of the same, a cam rotatably mounted upon the said shank and acting upon the rear ends of the dogs, a latch for holding the cam against turning when in one position, a spring advanced plunger -slidingly mounted within the shank and projecting through the plate and a reaming tool carried by the said plunger.

9. A reamer Jfor smoothing the interior ot pipe ends comprising, in combination, a plate constructed to be iitted against the end of a pipe threading die, a plurality of spring retracted holding dogs mounted on the plate and adapted for hooked engagement with the die trame, means for advancing the holding dogs7 and a reaming tool carried by the plate.

SAMUEL F. ESTELL.

lVitnesses JENNIE E. OLSON, Bnssin F. PICKETT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of atents` Washington, D. C. 

